Notify disconnect to debug server when inferiorshutdownrequested

Change-Id: I15bb1342f647362cb00e4b0d0453b663a2d3f637
Reviewed-on: http://codereview.qt.nokia.com/3095
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Christiaan Janssen <christiaan.janssen@nokia.com>

src/plugins/debugger/qml/qmldebuggerclient.h

@@ -59,6 +59,7 @@ public:
 
     virtual void continueInferior() = 0;
     virtual void interruptInferior() = 0;
+    virtual void shutdownInferior() = 0;
 
     virtual void activateFrame(int index) = 0;